Results 21 to 30 of about 28,554 (282)

Improving the Accuracy of Seafloor Topography Inversion Based on a Variable Density and Topography Constraint Combined Modification Method

open access: yesJournal of Marine Science and Engineering, 2023
The use of satellite altimetry to recover marine gravity anomalies allows for the rapid acquisition of seafloor topography on a wide range of regional scales.
Yongjin Sun   +4 more
doaj   +1 more source

Mapping marine habitat suitability and uncertainty of Bayesian networks: a case study using Pacific benthic macrofauna

open access: yesEcosphere, 2017
Resource managers increasingly use habitat suitability map products to inform risk management and policy decisions. Modeling habitat suitability of data‐poor species over large areas requires careful attention to assumptions and limitations.
Andrea Havron   +5 more
doaj   +1 more source

AN OPEN-SOURCE, DATA-LOGGING DEVICE FOR MARINE-BASED SURVEYS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Observation, monitoring, and understanding of the marine environment, particularly seafloor mapping, have gained global attention. Underwater photogrammetry is a valuable technique for creating accurate seafloor orthomosaics and digital elevation models (
A. Mufti   +4 more
doaj   +1 more source

Methods for quantitative studies of seafloor hydrothermal systems using 3D visual reconstructions

open access: yesROBOMECH Journal, 2017
3D visual mapping of the seafloor has found applications ranging from environment monitoring and survey of marine minerals to underwater archaeology and inspection of modern artificial structures.
Adrian Bodenmann   +3 more
doaj   +1 more source

Beyond bathymetry: Mapping acoustic backscattering from the deep seafloor with Sea Beam [PDF]

open access: yes, 1986
In its standard mode of operation, the multibeam echosounder Sea Beam produces high resolution bathymetric contour charts of the seafloor surveyed. However, additional information about the nature of the seafloor can be extracted from the structure of ...
de Moustier, Christian
core   +2 more sources

Seafloor margin map helps in understanding subduction earthquakes [PDF]

open access: yesEos, Transactions American Geophysical Union, 2005
Ecuador and southwest (SW) Colombia suffered widespread damage during the twentieth century as a result of some of the greatest subduction earthquakes and associated tsunamis ever recorded. In 1906, the Ecuador‐SW Columbia margin, located at the transition between the continent and deep ocean, ruptured over a 500‐kilometer length as a single great (Mw =
Collot, J.-Y.   +10 more
openaire   +3 more sources

Subtidal Natural Hard Substrate Quantitative Habitat Mapping: Interlinking Underwater Acoustics and Optical Imagery with Machine Learning

open access: yesRemote Sensing, 2021
Subtidal natural hard substrates (SNHS) promote occupancy by rich benthic communities that provide irreplaceable and fundamental ecosystem functions, representing a global priority target for nature conservation and recognised in most European ...
Giacomo Montereale Gavazzi   +5 more
doaj   +1 more source

A Bathymetry- and Reflectivity-Based Approach for Seafloor Segmentation

open access: yesGeosciences, 2018
A robust and flexible technique to segment seafloor acoustic mapping data by analyzing co-located bathymetric digital elevation models and acoustic backscatter mosaics is presented.
Giuseppe Masetti   +2 more
doaj   +1 more source

Seabed Mapping: A Brief History from Meaningful Words

open access: yesGeosciences, 2020
Over the last few centuries, mapping the ocean seabed has been a major challenge for marine geoscientists. Knowledge of seabed bathymetry and morphology has significantly impacted our understanding of our planet dynamics.
Pedro Smith Menandro   +1 more
doaj   +1 more source

Multispectral Multibeam Echo Sounder Backscatter as a Tool for Improved Seafloor Characterization

open access: yesGeosciences, 2019
The establishment of multibeam echosounders (MBES), as a mainstream tool in ocean mapping, has facilitated integrative approaches towards nautical charting, benthic habitat mapping, and seafloor geotechnical surveys. The combined acoustic response of the
Craig J. Brown   +3 more
doaj   +1 more source

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